public void setLength(float len)
{
if (this.isNull())
{
return;
}
LDLine v = this.unitVector();
this.pt2 = new LDPoint(this.pt1.x() + v.dx() * len, this.pt1.y() + v.dy() * len);
}
public LDLine unitVector()
{
if (this.length() == 0)
{
return(this);
}
LDLine unit = new LDLine(this);
unit.setP2(new LDPoint(unit.pt1.x() + unit.dx() / this.length(), unit.pt1.y() + unit.dy() / this.length()));
return(unit);
}
public LDLine unitVector()
{
if (this.length() == 0)
{
return this;
}
LDLine unit = new LDLine(this);
unit.setP2(new LDPoint(unit.pt1.x() + unit.dx() / this.length(), unit.pt1.y() + unit.dy() / this.length()));
return unit;
}